A catchment area (sometimes referred to as a service area) is the area that can be reached within a defined walking distance along the road network from the boundary of the park.
The size of the catchment areas (i.e., the distance along the road network from the park) was derived in accordance with the size of the park. The tables below indicate the catchment areas assigned to each park under the POS Tool classifications and for the DSR’s classification of Parks.
The proportions of the total LGA or suburb population within the specified park catchment areas were then computed. In addition, the proportion of the population by age (years) groups (0-4; 5-14; 15-19; 20-24; 25-34, etc) within the park catchments was determined. Population data were obtained from the Australian Bureau of Statistics (ABS) 2011, which is provided spatially at the SA1s geographic level (the smallest spatial unit at which data relevant population data is collected).
POS Tool and DSR park size classifications and catchment areas
Service Area Generation: Different sized catchment Park catchment areas / service areas) generated along the road network from district and small neighbourhood parks
The following steps were undertaken to identify the percentage of the total suburb and LGA populations with access to different parks
We acknowledge this method contains the assumption of equal distribution of population across an SA1 (modifiable area unit problem – or MAUP).
Population Proportion: Park catchment areas (hashed polygon) overlayed with SA1s and the proportion of the catchment areas overlapping each SA1 determined